JP2002224057A - Blood pressure measuring cuff and sphygmomanometer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a blood pressure measuring cuff extremely reducing adverse influence on a living body (friendly to the living body), excellent in reliability and durability, and incorporated with a novel pressurizing bag body, and a sphygmomanometer using this cuff. SOLUTION: In this blood pressure measuring cuff used for measuring blood pressure, the blood pressure measuring cuff has a cuff body, and the pressurizing bag body installed in the cuff body. The pressurizing bag body is a bag-shaped object inflating by being pressurized by the introduction of air, and acts so as to press a measuring part for measuring the blood pressure. The pressurizing bag body is composed of a material selected from polyurethane, polypropylene, polyethylene, polyethyleneterephthalate, and an ethylene-vinyl acetate copolymer(EVA).

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a band for measuring blood pressure used for measuring blood pressure and a sphygmomanometer using the same, and more particularly to a novel pressure bag which is gentle to a living body and has excellent reliability and durability. The present invention relates to a blood pressure measurement band having a body incorporated therein and a blood pressure monitor using the same.

[0002]

2. Description of the Related Art Conventionally, in a sphygmomanometer for measuring blood pressure by narrowing an arm band (band) on an arm, a pressure bag for measuring blood pressure is mounted in the arm band. By introducing air into the pressurized bag, the pressurized bag inflates, for example, to squeeze the arm, which is a measurement site, so that blood pressure measurement can be performed.

[0003] As a material for the pressurized bag, a material used in a doctor's office, a hospital, or the like is generally made of a latex material because measurement accuracy and durability are strongly required. Since those which are used simply are strongly demanded for cost reduction and compactness, those made of vinyl chloride are generally used.

A pressure bag made of a latex material can maintain a constant rubber elasticity even when the temperature difference is large in summer, winter, etc., so that the measured value is hardly affected by temperature fluctuations and reliability is improved. There is a merit of being superior. Further, since the latex material is excellent in durability, the change in the measured value is extremely small even when the measurement is repeated tens of thousands of times, and the reliability is also excellent in this respect. However, although the latex material is excellent in performance, it has disadvantages in that the cost of the raw material itself is high and the production process is complicated, which leads to an increase in cost. That is, in the production, a number of complicated and laborious operations such as a dipping step to a latex compound liquid, a drying step, a vulcanization step, a mold release step, an assembling step, and the like are required.

Further, the use of a latex material as a medical device has to be reluctant from the viewpoint of the living body. That is, it is said that the use of the latex in direct contact with the skin or in close contact with the skin very close to the skin may more or less adversely affect the living body.

On the other hand, a vinyl chloride pressurized bag mainly used in homes can be formed by stacking two sheets and then welding (fusing) them into a predetermined shape to form a bag. Therefore, there is an advantage that the manufacturing is simple and the cost can be easily reduced. On the other hand, physical properties of vinyl chloride are apt to change with temperature due to the characteristics of the resin. Therefore, when this is used for the pressurized bag, a measurement error due to a temperature change may easily occur.

[0007] Further, it is never desirable to use a vinyl chloride product in a state where it comes into direct contact with the skin from the living body, if not the above-mentioned latex, or in close contact with the skin very close to the skin. It cannot be said that it is. Furthermore, there is a problem of environmental pollution during incineration.

[0008]

DISCLOSURE OF THE INVENTION The present invention has been made based on such a situation, and an object of the present invention is to provide a novel material which has very little adverse effect on a living body (friendly to a living body) and is excellent in reliability and durability. An object of the present invention is to provide a blood pressure measurement band incorporating a pressure bag and a blood pressure monitor using the same.

[0009]

In order to solve the above-mentioned problems, the present invention provides a blood pressure measurement band used for blood pressure measurement, the blood pressure measurement band comprising: a band main body; A pressure bag attached to the band body, wherein the pressure bag is:
It is a bag-like material that is pressurized and expanded by the introduction of air and acts so as to press a measurement site for blood pressure measurement. The pressurized bag is made of polyurethane, polypropylene, polyethylene, polyethylene terephthalate, or ethylene / vinyl acetate. It is composed of a material selected from polymers (EVA).

In a preferred embodiment of the present invention, the pressure bag is made of a polyurethane material,
Hardness is 20 to 90, and breaking elongation is 200 to 100.
It is configured to have 0% physical properties.

In a preferred embodiment of the present invention, the pressurized bag is formed by stacking two sheets and forming the bag into a bag by fusing.

In a preferred embodiment of the present invention, the thickness of the sheet material constituting the pressurized bag is 0.05 to 1 mm.
mm.

In a preferred aspect of the present invention, the pressurized bag is configured so that a line for introducing or discharging air and a line for detecting pressure in the pressurized bag are connected to each other. Is done.

In a preferred embodiment, the blood pressure measurement band of the present invention is configured to be used for a blood pressure monitor used as a medical practice.

A sphygmomanometer according to the present invention is configured to include the above-described band for measuring blood pressure.

[0016]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below in detail with reference to FIGS. FIG. 1 is a drawing showing an example of a blood pressure measurement band 1 in which the pressure bag 10 is incorporated, and FIG. 2 is an embodiment of the pressure bag 10 used in the blood pressure measurement band of the present invention. It is a drawing for explanation.

The blood pressure measuring band 1 of the present invention shown in FIG.
Exemplifies a type used by being wound around an arm for measuring blood pressure. Apart from this form, there is also a type in which a band is set in a ring shape in advance and an arm is used by inserting the arm into the ring shape. Of course, even in this form, the blood pressure measurement of the present invention is performed. It is a band 1.

As shown in FIG. 1, a band 1 for measuring blood pressure according to the present invention comprises, for example, a band-shaped band main body 10 serving as a basic member wound around an arm, and a pressure bag mounted in the band main body 10. And a body 20. The pressurized bag 20 is a bag-like material that is pressurized and expanded by the introduction of air, acts to press a measurement site for blood pressure measurement, and is a portion that can be said to be a main part of pressure measurement. The pressurized bag 20 is generally provided with the band body 10.
After being inserted or housed in a pocket-like portion provided in the device, it is sealed and included.

The pressurized bag 20 of the present invention is made of polyurethane, polypropylene, polyethylene, polyethylene terephthalate, ethylene / vinyl acetate copolymer (EV
It is composed of a material selected from A). Among these, a preferable material is polyurethane. Further, the polyurethane used in the present invention has a Shore A hardness of 20 to 90, preferably 50 to 80, and a breaking elongation of 200 to 1000 as suitable physical properties as a pressure bag for blood pressure measurement.
%, Preferably 400 to 800%. The thickness of the sheet is 0.05 to 1 mm, preferably,
0.1 to 1 mm. Those having the above-mentioned physical properties show excellent properties similar to those of latex used in medical practice in hospitals which have been conventionally used. That is, the measurement error is extremely small and the durability is excellent. Gentle to the living body. From this viewpoint, it can be said that the device of the present invention is optimal (corresponding to a substitute) as the blood pressure measurement band 1 of the sphygmomanometer used as a medical practice.

As shown in FIG. 2, the pressurized bag body 20 is formed by laminating two sheets 21 and 22 made of the above-mentioned predetermined resin material, and fusing (welding) them. Since the shape processing can be performed, the productivity is also very good. As shown in FIG. 2, a line 25 for introducing or discharging air and a line 26 for detecting pressure in the pressurized bag are normally connected to the pressurized bag 20 in the pressurized bag 20. Are linked. These lines can be combined into one line. Also in this case, the above two lines 2
5, 26 act to be substantially present.

The belt body 1 having such a pressurized bag body 20
For example, various known members such as a Velcro (registered trademark) and a protective sheet member for protecting the skin may be attached to 0.

Finally, a device for supplying air to the pressurized bag, a pressure measuring device, various control devices, and the like are connected to or incorporated into the band for measuring blood pressure to complete the sphygmomanometer.

[0023]

EXAMPLE A polyurethane pressure bag (physical properties;
(Shore A hardness = 60, critical elongation at break = 600%, sheet thickness = 0.3 mm), and a band for blood pressure measurement was prepared using this (Example sample 1). In comparison with this, a blood pressure measurement band using a conventional latex pressure bag (Comparative Sample 1) and a blood pressure measurement band using a vinyl chloride pressure bag (Comparative Sample 2) Was prepared.

For each of these samples, a temperature difference of 20
The measured value variation at 10 ° C. (10 ° C. to 30 ° C.) and the durability (a 50,000-times repetition test of a pressure fluctuation of 0 to 300 mmHg) were evaluated.

With respect to the durability evaluation and the measurement value variation evaluation, the sample of the example 1 and the sample 1 of the comparative example were respectively at acceptable levels, while the sample 2 of the comparative example was acceptable.
Did not reach the acceptable level in any of the evaluations. Note that Comparative Sample 1 is inferior to Example Sample 1 in terms of productivity and biocompatibility.

Also, pressure bags made of polypropylene, polyethylene, polyethylene terephthalate, and ethylene / vinyl acetate copolymer (EVA) were evaluated at almost the same level (slight but inferior) as in Example sample 1. Was.

[0027]

The effects of the present invention are apparent from the above results. That is, the present invention is a blood pressure measurement band used for blood pressure measurement, the blood pressure measurement band includes a band body, and a pressurized bag attached to the band body, The pressurized bag is a bag-like material that is pressurized and expanded by the introduction of air and acts to press a measurement site for blood pressure measurement, and the pressurized bag is made of polyurethane, polypropylene,
Since it is composed of a material selected from polyethylene, polyethylene terephthalate, and ethylene / vinyl acetate copolymer (EVA), it has excellent reliability and durability, and is also gentle on living organisms.

[Brief description of the drawings]

FIG. 1 is a drawing showing an example of a blood pressure measurement band incorporating a pressure bag.

FIG. 2 is a view for explaining one embodiment of a pressure bag used for the blood pressure measurement band of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Band for blood pressure measurement 10 ... Band body 20 ... Pressurized bag body 21, 22 ... Sheet-like material

Claims (7)

[Claims] 1. A band for measuring blood pressure used for measuring blood pressure, wherein the band for measuring blood pressure comprises a band main body, and a pressurized bag attached to the band main body. The pressure bladder is a bag-like material that is pressurized and expanded by the introduction of air and acts to press a measurement site for blood pressure measurement.The pressure bladder is polyurethane, polypropylene, polyethylene, polyethylene terephthalate, A band for blood pressure measurement, comprising a material selected from ethylene / vinyl acetate copolymer (EVA). 2. The blood pressure measurement band according to claim 1, wherein the pressure bag is made of a polyurethane material, has a Shore A hardness of 20 to 90, and a breaking elongation of 200 to 1000%. 3. The pressure bag body is formed by stacking two sheet-like objects and forming the bag into a bag shape by fusing.
Or the blood pressure measurement band according to claim 2. 4. The band for measuring blood pressure according to claim 3, wherein the thickness of the sheet-like material constituting the pressurized bag is 0.05 to 1 mm. 5. The pressure bag according to claim 1, wherein a line for introducing or discharging air and a line for detecting pressure in the pressure bag are substantially connected to each other. The band for measuring blood pressure according to item 1. 6. The blood pressure measurement band according to claim 1, which is used for a sphygmomanometer used as a medical practice. 7. A sphygmomanometer comprising the blood pressure measurement band according to any one of claims 1 to 6.